London Banter - View Single Post - why are the new Victoria and trains so slow?

[email protected] · August 9th 11, 04:49 PM posted to uk.transport.london

In article , d ()
wrote:

On Tue, 9 Aug 2011 13:47:22 +0100
Roland Perry wrote:
In message , at 09:54:29 on Tue, 9 Aug
2011, d remarked:
I understand one of the prerequisites for the introduction
of regenerative braking on the Central Line was a requirement to
replace older motors in escalators at stations. They share their supply
with the traction and needed to be able to handle the greater
variations in supply voltage.

Does that mean the escalators speed up slightly when a train brakes into
a station? Seems a good idea - get the passengers from the last train
out of the station quicker!

Hopefully they stay the same speed, but don't draw as much "external"
power for a few seconds.

Ah pity. I had images of a couple of particularly full trains pulling into
a station at the same time and people being flung off the top of the
escalator over the ticket barriers

Did anyone else here ever stand on the platform at Essex Road in Northern
City Line days? The platform lights were fed from the traction supply so
dimmed sharply when a train started away. Of course the platform was empty
at that point as the passengers had all got on the departing train but we
were changing directions there on the Underground trip in 1970.

--
Colin Rosenstiel